Return-Path: Delivered-To: apmail-db-derby-dev-archive@www.apache.org Received: (qmail 89712 invoked from network); 29 Jun 2009 23:46:06 -0000 Received: from hermes.apache.org (HELO mail.apache.org) (140.211.11.3) by minotaur.apache.org with SMTP; 29 Jun 2009 23:46:06 -0000 Received: (qmail 54939 invoked by uid 500); 29 Jun 2009 23:46:16 -0000 Delivered-To: apmail-db-derby-dev-archive@db.apache.org Received: (qmail 54903 invoked by uid 500); 29 Jun 2009 23:46:16 -0000 Mailing-List: contact derby-dev-help@db.apache.org; run by ezmlm Precedence: bulk List-Help: List-Unsubscribe: List-Post: List-Id: Reply-To: Delivered-To: mailing list derby-dev@db.apache.org Received: (qmail 54895 invoked by uid 99); 29 Jun 2009 23:46:16 -0000 Received: from athena.apache.org (HELO athena.apache.org) (140.211.11.136) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Jun 2009 23:46:16 +0000 X-ASF-Spam-Status: No, hits=-2000.0 required=10.0 tests=ALL_TRUSTED X-Spam-Check-By: apache.org Received: from [140.211.11.140] (HELO brutus.apache.org) (140.211.11.140) by apache.org (qpsmtpd/0.29) with ESMTP; Mon, 29 Jun 2009 23:46:07 +0000 Received: from brutus (localhost [127.0.0.1]) by brutus.apache.org (Postfix) with ESMTP id D0CC8234C052 for ; Mon, 29 Jun 2009 16:45:47 -0700 (PDT) Message-ID: <626304293.1246319147854.JavaMail.jira@brutus> Date: Mon, 29 Jun 2009 16:45:47 -0700 (PDT) From: "Dag H. Wanvik (JIRA)" To: derby-dev@db.apache.org Subject: [jira] Updated: (DERBY-1257) Enhance Derby optimizer and execution model to support effective use of multiple indexes on one table. Derby currently can use one index on a table and there are many situations where using multiple indexes on a table could improve performance significant In-Reply-To: <73162026.1146079265025.JavaMail.root@brutus> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit X-JIRA-FingerPrint: 30527f35849b9dde25b450d4833f0394 X-Virus-Checked: Checked by ClamAV on apache.org [ https://issues.apache.org/jira/browse/DERBY-1257?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ] Dag H. Wanvik updated DERBY-1257: --------------------------------- Component/s: SQL > Enhance Derby optimizer and execution model to support effective use of multiple indexes on one table. Derby currently can use one index on a table and there are many situations where using multiple indexes on a table could improve performance significant > --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- > > Key: DERBY-1257 > URL: https://issues.apache.org/jira/browse/DERBY-1257 > Project: Derby > Issue Type: Improvement > Components: SQL > Affects Versions: 10.2.1.6 > Reporter: Manjula Kutty > Priority: Minor > > Enhance Derby optimizer and execution model to support effective use of multiple indexes on one table. Derby currently can use one index on a table and there are many situations where using multiple indexes on a table could improve performance significantly. Please see the discussion at http://article.gmane.org/gmane.comp.apache.db.derby.devel/16099 -- This message is automatically generated by JIRA. - You can reply to this email to add a comment to the issue online.